Sometimes you may need to copy data from one table to another using SQL. Here is how to copy data from one table to another in SQL.
Here is how to change column from NULL to NOT NULL in SQL Server, MySQL, PostgreSQL using ALTER TABLE statement.
Data modeling tools help with database design and administration. Here are the top 5 data modeling tools for SQL Server.
Database design tools allow you to design database schema, and simplify database administration. Here are the top 5 free database design tools for your business.